Carbureter.



J. T. PETERSON.

CARBURETER.

APPLICATIONS FILED NOV. UL 1915- 'BENEWED MAY 31-1917- 4 I Patented July 17, 1917.

25 3% w 1.9 asv 5 a] I g; w g

. Q k I 7 Tfiferon,

aroma T. Person, or IanLnosn PARK, ILLIIIoIs.

cnunnrna.

Specification of Letters Patent.

Patented July it, 1217.

Application filed November 20, 1915, Serial No. 62.489. Renewed May 31, 1917. Serial No. 172,077.

' To all whom it may concern:

Be it known that 1, Jon '1. Pnrnnson, a citizen of the United States, and a resident of the city of Melrose Park, county of Cook, and State of Illinois, have invented certain new and useful Improvements in- Carbureters, of which the following is a I specification.

My invention relates to improvements in carbureters, and has for its object the provision of a carbureter provided with improved means for regulating the fuel mixture to meet difl'erent weather conditions,

or other contingencies.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing forming a part of this specification, and in which, v

Figure .1 is a vertical sectionof a carbuinvention,

Fig. 2, a section' taken on line 2-2 of Fig. 1,

Fig. 3, a perspective view of a bearing -member employed in the construction, and

Fig.4, a perspective view of an operating lever employed in the construction.

The preferred form of construction, as

illustrated in the drawing, comprises a can 7 bureter provided with the usual float chamher '5 having the usual float 6 therein con trolling the usual needle valve 7 which admits fuel to said'chamber in the usual man-,

ner, said float operating in the usual manner to maintain a constant level of fuel in je'cted from chamber 5 said chamber. A fuel supply pipe 8 is prointo the air passage 9 of the carbureter and a needle valve 10 is arranged to control the passage of fuel through pipe 8. Needle valve 10 is normally held in open position by means of a spring 11 and cooperates with an operating lever 12 mounted at the top of the carbureter at one side thereof. A bearing 13 is provided with a bifurcated arm 14 slidable upon a lateral projection 15 on lever 12, and a set screw 16 is provided on lever 12 passing through guide arm 14 to serve as a means for edecting adjustments of bearing 13 longitudinally of lever 12, as will be readily understood. An operating stem 17 carrym an operating arm 18 is rotatably mounte in bearing 13 and provided with an eccentric 19 rolling on a surface 20' provided therefor on the carbureter casing. Lever 12 carries a set screw 21 contacting With the upper end of needle valve 10 and a spring held friction block 21' is arranged to contact with said setv screw 21 to exert friction thereon to hold the same inv adjusted posltlons.

At its inner end lever 12 is provided with a slot 22 engaging over a guide rib 23 provided on the casing of the carbureter and a spring 24 is interposed between the inner end of lever 12 and the usual flange 25 of the carbureter casing, said spring serving to press the set screw 21 normally into contact with thehead of valve 10; The outer end of lever 12 is provided with a slot 26 embracing the upper end of a spring held air valve stem 27 carrying the usual auxiliary air valve 28 for the admission of more air to the carbureter under high speeds. A

valve 10 to admit additional fuel. By ma- I nipulating eccentric 19 through handle 18, the eccentric 19 may be ad usted on the surface 20 to vary the leverage of lever 12 to vary the extent of the openingof valve 10. Likewise adjustments ofbearing 13 on lever 12 through the medium of set screw 16 may be employed to vary the leverage of lever 12, as will be readily understood. By this arrangement a delicate adjustment may be obtained to meet diflerent weather conditions and the manipulations of the fuel valve during operation may" be. also nicely adjusted and varied. It is also obvious that by. adjustment of the member 19 it is possible to open the oil*valve without disturbing or operating the air valve 28, that is, the oil valve may be opened without opening the air valve, which is of advantage when running the engine without the ing the engine.

Valve stem 27 carries a retarding piston 30 at its lower end operating in a retarding chamber 31 which is in open communication supplemental air supply and also for primwith chamber 5 through a passage 32, said movements of valve28 will be retarded to precise details of construction set forth, butdesire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. The combination with a carbureter provided with an air valve and a fuel valve, of a lever operatively connected-with said air valve; an eccentric carried by said 'lever and given a rolling bearing on said carbureter whose point of contact with the carbureter acts as the fulcrum for said lever; and an operative connection between said lever and said fuel valve, substantially as described.

2. The combination with a carbureter provided with an air valve and a fuel valve, of

a lever operatively connected with said air valve; an eccentric ad ustablc longitudinally of said lever and given a rolling bearing on said carbureter whose point of contact with the carbureter acts as the fulcrumfor said lever; and'an operative connection between said lever and said fuel valve, substantially as described.

3. The combination with a carbureter provided with a spring held air valve and a springheld fuel valve, of a spring held lever operatively connected with said air valve; an eccentric carried by said lever and given a rolling bearmg on said carbureter 'whose point of contact with the carbureter acts as the fulcrum for said lever; and a set screw connection between said lever and said fuel valve, substantially as described.

4. The combination with a carbureter provided with aspring held air valve and a spring held fuel valve, of a spring held lever operatively connected with said air valve; an eccentric adjustable longitudinally of said lever and given a rolling hearing on said carbureter whose point of contact with the carbureter acts as the fulcrum for said lever; and a set screw connection between said lever and said fuel valve, substantially as described.

5. The combination with a carbureter provided with a spring held air valve and a spring held fuel valve, of a lever operatively connected with said air valve; abearing member slidably adjustable onsaid lever; an eccentric carried by said bearing and rolling on said carbureter whose point of contact with the carbureter acts as the fulcrum for said lever; a set screw carried bysaid lever and arranged to force said fuel valve toward closing position; and a spring contacting with said lever to hold said set screw in operative contact with said fuel valve, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN T. PETERSON. Witnesses:

JOSHUA R. H. Po'r'rs, HELEN F. LILLIB. 

